525 Internal Standard

Norcodeine, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 467-15-2

2,2',3,4,4',5,5'-Heptachlorobiphenyl, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 35065-29-3

1,2,3,4-Tetrachlorobenzene